HIGOLE and MELE Media Player - No Signal detected on 2015 and earlier ELO displays

This is a well-known class of problem. I didn't find any HIGOLE-specific ELO bug reports, but based on the symptoms and what's known about this combination, here's the full picture:

What's almost certainly happening: EDID/HDMI Handshake Failure

This isn't likely a defective unit — it's a compatibility issue between the HIGOLE's Intel UHD 600 graphics (Gemini Lake) and the older ELO display. Here's why:

• The HIGOLE outputs up to 4K via HDMI 2.0. Older ELO displays may advertise limited or nonstandard EDID data that the Intel UHD 600 GPU doesn't correctly interpret, causing it to output a signal the display can't sync to — or no signal at all.
• There are documented cases of certain Intel UHD graphics chips (Gemini Lake and later) failing to recognize the EDID of certain touch monitors properly, resulting in a black/no-signal screen even though both devices work fine independently. Intel Community
• This exact symptom pattern — media player shows fine on a normal monitor, normal computer shows fine on the ELO, but the two won't work together — has been reported specifically with older ELO touchscreens and media players, and it often comes down to resolution/refresh rate negotiation. Older ELO models sometimes don't support 720p (1280×720) and have a specific list of accepted resolutions. BrightSign

Sending a replacement HIGOLE will likely NOT fix this — you'd be replacing a working unit with another working unit. The same incompatibility will follow.

Recommended Troubleshooting Steps (in order)

1. Get the ELO model number. This is critical. Older ELO 32" units (pre-2015 or so) often had unusual resolution support lists or weak EDID implementation.
2. Try forcing a lower output resolution on the HIGOLE. If you can get a signal on any other monitor first, go into Windows Display Settings or the Intel Graphics control panel and set the output to 1920×1080 @ 60Hz before connecting to the ELO. Alternatively, try 1280×1024 @ 60Hz, which is a safe fallback for many older displays.
3. Check the BIOS display settings. The HIGOLE has an unrestricted BIOS with display resolution adjustment options — worth checking if there's a way to cap or force a specific output resolution there. Newegg
4. Try a different HDMI cable, preferably a known-good standard HDMI 1.4 cable rather than a premium HDMI 2.0 cable, as some older displays negotiate better with HDMI 1.x signaling.
5. Use an HDMI EDID emulator/injector (~$15–30 on Amazon, brands like "NEWCARE" or "Dr. HDMI"). An EDID emulator stabilizes the format negotiation and is a well-established fix for handshake failures between legacy displays and modern sources. This is the most reliable hardware fix if software resolution forcing doesn't work. CEDIA
6. VGA if available. If the older ELO has a VGA input and the HIGOLE has USB-C with DisplayPort alt mode, a USB-C to VGA adapter completely sidesteps the HDMI/EDID issue entirely.

Bottom Line

Hold off on shipping a replacement unit until the customer confirms the ELO model number and you've tried forcing the resolution. If the HIGOLE you tested before shipping passed with your shop's ELO 3243L, the unit is almost certainly fine — the issue is in the handshake with that specific older display.

Yes, the same fundamental issue applies to the MELE PCG02 Pro, and here's why:

The root cause is the Intel graphics chipset, not the brand

The MELE PCG02 Pro uses Intel integrated graphics — depending on the variant, either Intel UHD (Gemini Lake J4125/Jasper Lake N5105) or Intel HD graphics on the N100 Alder Lake-N. The HIGOLE J4105 you're already dealing with uses Intel UHD 600 (also Gemini Lake). These are all Intel integrated GPU families with the same known behavior around EDID negotiation with older displays. Swapping from HIGOLE to MELE doesn't change the underlying graphics hardware generation in any meaningful way — you'd still be presenting the older ELO with a modern Intel GPU outputting HDMI 2.0 at 4K-capable signal levels. Electronics-Lab

The MELE also has documented minor HDMI issues

User reviews of the MELE PCG02 Pro specifically mention HDMI connectivity concerns, which aligns with the broader class of EDID/handshake compatibility problems seen with these mini PCs and atypical displays. Starry Hope

What's different about the MELE

The PCG02 Pro has two HDMI 2.0 ports and a BIOS reset button located between them, which could be useful for recovery if a display setting gets stuck. It also tends to have a slightly more active support community and firmware update cadence than HIGOLE, which could potentially help with driver-level resolution forcing — but that doesn't eliminate the core compatibility risk. Manuals+

Bottom line: If the goal is to avoid the EDID/handshake problem with that older ELO, switching to a MELE PCG02 Pro is not a reliable fix — it's a lateral move to a similar device with the same class of Intel graphics. The more dependable solutions remain the same ones from before: identify the ELO model, force a lower output resolution, or use a cheap HDMI EDID emulator inline. Those fixes would work with either device.